OperateFile

首先通过文件操作，读取文件内容，把字符逐个提取后统计字符频率，建立哈夫曼树和进行哈夫曼编码，当然这是根据ASCII编码来将字符转换为二进制，然后实现前缀编码，然后把编码后的使用二进制流写入相应文件(First through file operations, read the file content, the characters one by one after extracting character frequency statistics, establish a Huffman tree and Huffman encoding, and, of course, this is according to ASCII code to convert characters to the binary, then realize the prefix encoding, and then the encoded using binary stream into the corresponding files )

VB写的如何和Excel表格进行数据交换,修改,删除等动作.有详细的中午注释,适合菜鸟学习!(How to write VB and Excel spreadsheets for data exchange, modify, or delete action. Noon detailed notes, suitable for a novice to learn!)

serilizatiob of binary objects into xml file and de-serialization that

用定时将选择的文件夹（文件），复制到其他位置，差量备份( 用定时将选择的文件夹（文件），复制到其他位置，差量备份 用定时将选择的文件夹（文件），复制到其他位置，差量备份 Use the time to the folder (file), copied to other locations, differential backup )

只许要把文件放到文件夹为“III”的同一目录，运行将可以文件夹加密(only the documents should put to the folder "III" in the same directory, will be running folder encryption)

在VS2008的MFC下，对excel,进行查询，排序，统计。(In VS2008 under the MFC, to excel, the query, sorting, statistics.)

文件输入物品税前价格，通过相应物品的税率计算出物品的售价并显示。(File input goods before prices, tax rates by the corresponding articles of the items priced and displayed.)

由文本读出，并将其16进制内容转化为10进制，最后画曲线显示。(read the HEX data from the file,then change then to BIN format,lastly draw the curve according to the data.)

以前写的文件删除恢复软件代码发出来,希望能对大家有帮助，源码比较乱，也没时间整理,源码sdk写的，vc6.0编译通过，win7、xp测试通过。支持fat32和ntfs文件系统的文件删除恢复 (Write files deleted recovery software code issued to hope that it can help, chaotic source, there is no time to sort out, source sdk write, vc6.0 compiled through win7, xp test by. Support fat32 and ntfs file system file deletion recovery)

说明：  可以在后台复制U盘的所有文件。可以自己修改哦(U disk can copy all the files in the background. Oh, can modify their own)